This is a lovely old turning that is definitely over 100 years old it came out of the Georgian building about 30 years ago it was then a bad post for a while the measurement without the locating lugs is 51.5 c the circular lug at the top is 2.5 centimeters the rectangular log at the bottom is 4 cm that are a few cracks and splits in the grain which I don't think will go any further check the photos they could easily be restored with a bit of wood glue
